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Re: Stephen Hawking warns "we should avoid aliens"
Quote:
Originally Posted by Hom3r
Well life is out there, "The Drake Equation" proves it, around 100,000,000 planets that could support life (that just the Milky Way)
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But the Fermi Paradox says if that's true, why haven't we seen any?
From Wiki
Quote:
The following are some of the facts and hypotheses that together serve to highlight the apparent contradiction:
There are billions of stars in the Milky Way similar to the Sun.
With high probability, some of these stars have Earth-like planets in a circumstellar habitable zone.
Many of these stars, and hence their planets, are much older than the Sun. If Earth-like planets are typical, some may have developed intelligent life long ago.
Some of these civilizations may have developed interstellar travel, a step humans are investigating now.
Even at the slow pace of currently envisioned interstellar travel, the Milky Way galaxy could be completely traversed in a few million years.
Since many of the Sun-like stars are billions of years older than the Sun, the Earth should have already been visited by extraterrestrial civilizations, or at least their probes.
However, there is no convincing evidence that this has happened.
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